<template>
  <div class="table">
    <div class="container">
      <div class="handle-box">
        <el-button type="primary" size="mini" @click="delAll">批量删除</el-button>
        <el-input size="mini" v-model="select_word" placeholder="筛选关键字" class="handle-input"></el-input>
        <el-button type="primary" size="mini" @click="centerDialogVisiable=true">添加歌单</el-button>
      </div>
    </div>
    <el-table size="mini" border style="width: 100%" height="680px" :data="data" @selection-change="handleSelectChange">
      <el-table-column type="selection" width="40"></el-table-column>
      <el-table-column label="歌单图片" width="110" align="center">
        <template slot-scope="scope">
          <div class="songList-img">
            <img :src="getUrl(scope.row.pic)" style="width:100%"/>
          </div>
          <el-upload :action="uploadUrl(scope.row.id)" :before-upload="beforeAvatorUpload"
                     :on-success="handleAvatorSuccess">
            <el-button size="mini">更新图片</el-button>
          </el-upload>
        </template>
      </el-table-column>
      <el-table-column prop="title" label="标题" width="120" align="center"></el-table-column>
      <el-table-column label="简介" >
        <template slot-scope="scope">
          <p style="height: 100px;overflow: scroll">{{scope.row.introduction}}</p>
        </template>
      </el-table-column>
      <el-table-column prop="style" label="风格" width="120" align="center"></el-table-column>
      <el-table-column label="歌曲管理" width="110" align="center">
        <template slot-scope="scope">
          <el-button size="mini" @click="songEdit(scope.row.id)">歌曲管理</el-button>
        </template>
      </el-table-column>
      <el-table-column label="评论" width="80" align="center">
        <template slot-scope="scope">
          <el-button size="mini" @click="getComment(data[scope.$index].id)">评论</el-button>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" width="150">
        <template slot-scope="scope">
          <el-button size="mini" @click="handleEdit(scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" @click="handleDelete(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <div class="pagination">
      <el-pagination
        background
        layout="total,prev,pager,next"
        :current-page="currentPage"
        :page-size="pageSize"
        :total="tableData.length"
        @current-change="handleCurrentChange"
      ></el-pagination>
    </div>
    <el-dialog title="添加歌单" :visible.sync="centerDialogVisiable" width="400px" center>
      <el-form :model="registerForm" ref="registerForm" label-width="80px">
        <el-form-item prop="title" label="标题" size="mini">
          <el-input v-model="registerForm.title" placeholder="标题"></el-input>
        </el-form-item>
        <el-form-item prop="introduction" label="简介" size="mini">
          <el-input v-model="registerForm.introduction" placeholder="简介" type="textarea"></el-input>
        </el-form-item>
        <el-form-item prop="style" label="风格" size="mini">
          <el-input v-model="registerForm.style" placeholder="风格"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button size="mini" @click="centerDialogVisiable=false">取消</el-button>
        <el-button size="mini" @click="addSongList">确定</el-button>
      </span>
    </el-dialog>
    <el-dialog title="修改歌单" :visible.sync="editVisiable" width="400px" center>
      <el-form :model="form" ref="form" label-width="80px">
        <el-form-item prop="title" label="标题" size="mini">
          <el-input v-model="form.title" placeholder="标题"></el-input>
        </el-form-item>
        <el-form-item prop="introduction" label="简介" size="mini">
          <el-input v-model="form.introduction" placeholder="简介" type="textarea"></el-input>
        </el-form-item>
        <el-form-item prop="style" label="风格" size="mini">
          <el-input v-model="form.style" placeholder="风格"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button size="mini" @click="editVisiable=false">取消</el-button>
        <el-button size="mini" @click="editSave">确定</el-button>
      </span>
    </el-dialog>
    <el-dialog title="删除歌单" :visible.sync="delVisible" width="300px" center>
      <div align="center">删除不可恢复，是否确定删除？</div>
      <span slot="footer">
        <el-button size="mini" @click="delVisible=false">取消</el-button>
        <el-button size="mini" @click="deleteRow">确定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
  import {getAllSongList,setSongList,updateSongList,delSongList} from '../api'
  import {mixin} from '../mixins'
  export default {
    mixins: [mixin],
    data() {
      return {
        centerDialogVisiable: false,//添加弹窗是否显示
        editVisiable: false,        //编辑弹窗是否显示
        delVisible: false,        //删除弹窗是否显示
        registerForm: {//添加框
          title: '',
          introduction: '',
          style: ''
        },
        form: {
          id: '',
          title: '',
          introduction: '',
          style: ''
        },
        tableData: [],
        select_word: '',
        tempData: [],
        pageSize: 5,// 分页每页大小
        currentPage: 1, // 当前页
        idx: -1,             // 当前选择项
        multipleSelection: []  //哪些项已经打勾
      }
    },
    computed: {
      //计算当前搜素结果表里的数据
      data() {
        return this.tableData.slice((this.currentPage-1)*this.pageSize,this.currentPage*this.pageSize)
      }
    },
    watch: {
      //搜索框里面的内容发生变化的时候，搜索结果table列表内容跟着发生变化
      select_word: function () {
        if(this.select_word == ''){
          this.tableData = this.tempData
        }else {
          this.tableData = []
          for(let item of this.tempData){
            if(item.title.includes(this.select_word)){
              this.tableData.push(item)
            }
          }
        }
      }
    },
    created () {
      this.getData();
    },
    methods: {
      //设置分页
      handleCurrentChange(val){
        this.currentPage = val;
      },
      //添加歌单
      addSongList() {
        let params = new URLSearchParams();
        params.append('title',this.registerForm.title)
        params.append('pic','/img/songListPic/123.jpg')
        params.append('introduction',this.registerForm.introduction)
        params.append('style',this.registerForm.style)

        setSongList(params).then(res => {
          if(res.code == 1){
            this.getData()
            this.notify('添加成功','success')
          }else {
            this.notify('添加失败','error')
          }
        }).catch(error => {
          console.log(error)
        })
        this.centerDialogVisiable = false

      },
      //弹出编辑页面
      handleEdit(row){
        this.editVisiable = true
        this.form = {
          id: row.id,
          title: row.title,
          introduction: row.introduction,
          style: row.style
        }
      },
      //保存编辑页面修改的数据
      editSave(){
        let params = new URLSearchParams();
        params.append('id',this.form.id)
        params.append('title',this.form.title)
        params.append('introduction',this.form.introduction)
        params.append('style',this.form.style)

        updateSongList(params).then(res => {
          if(res.code == 1){
            this.getData()
            this.notify('修改成功','success')
          }else {
            this.notify('修改失败','error')
          }
        }).catch(error => {
          console.log(error)
        })
        this.editVisiable = false
      },
      //删除一个歌单
      deleteRow(){
        delSongList(this.idx).then(res => {
          if(res){
            this.getData()
            this.notify("删除成功","success")
          }else {
            this.notify("删除失败","error")
          }
        })
        this.delVisible = false
      },
      //歌曲管理：转向歌曲管理页面
      songEdit(id,name){
        this.$router.push({path:`/ListSongPage`,query:{id}})
      },
      //查询所有歌单
      getData(){
        this.tempData = []
        this.tableData = []
        getAllSongList().then(res => {
          this.tempData = res
          this.tableData = res
          this.currentPage = 1
        })
      },
      //更新图片
      uploadUrl(id){
        // console.log(`${this.$store.state.HOST}/songList/updatesongListPic?id=${id}`)
        return `${this.$store.state.HOST}/songList/updateSongListPic?id=${id}`
      },
      //转向该歌单的评论列表
      getComment(id){
        this.$router.push({path: '/comment',query: {id}})
      }
    }
  }
</script>
<style scoped>
  .handle-box {
    margin-bottom: 20px;
  }
  .songList-img{
    width: 100%;
    height: 80px;
    border-radius: 5px;
    margin-bottom: 5px;
    overflow: hidden;
  }
  .handle-input{
    width: 300px;
    display: inline-block;
  }
  .pagination {
    display: flex;
    justify-content: center;
  }
</style>
